Back to playing with Pd after a long break with, partly inspired by the new book at pd-tutorial.com... problem is, none of the patches which go with the book will open. Either by double clicking or opening from within the application, nothing happens. The files I've downloaded seem perfectly fine, I can open them in a text editor, it's just Pd won't do anything with them.

Any ideas what could be wrong here? Mac OSX 10.4.11, Pd-extended 0.39.3

Thanks,